General Information:
Chemical Formula:Fe++Sb+++2O4
Composition:(Molecular Weight = 363.34 gm)Iron 15.37 %
FeAntimony 67.02 %
SbOxygen 17.61 %
O Empirical Formula: Fe2+Sb2O4
Physical Properties: Cleavage:[110] Perfect, [200] Good
Color:red, reddish brown, or yellow.
Density:4.3
Diaphaniety:Opaque
Hardness:3.5 - Copper Penny
Luster:Metallic
Streak:yellowish brown
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